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Uninstall using the DDU tool (not the regular uninstaller) and reinstall. That did it for me.
Using DDU helped.
Been OK for a couple of days.
However having a Digital TV viewer open on one screen and watching a youtube on another caused the bug to come back on the youtube screen.
Hello, I have the same issue after Anniversary update, specially with the sound. Im getting HDMI sound distortion and black screen/freeze sometimes.
For the black screen/freeze, the driver 16.9.2 hotfix seems to resolve the issue. Previous versions were freezing and turning to black screens.
For the sound, I checked everything on my receiver and the other HDMI devices sounds good. Is just the PC giving the sound distorted through HDMI. Some observations is that the higher the sample rate/bit-depth, the more distortion will be. It looks like the AMD HDMI audio driver has issues with the new anniversary update. I tried the driver versions from 16.7.2 to the 16.9.2 Hotfix, same issues with audio.
-Core i5 6600k
-8GB DDR4 2800
-AMD R9 270X (Connected through HDMI to a Yamaha RX-A800 receiver, then to the TV)
I hope the HDMI sound gets fixed soon.
check your playback device, windows had changed my playback device on its own..